Hi guys, I have seen a fair bit of posts similar to the help I am requesting, but with enough variances that I felt I should just come out and ask.
Basically, I am trying to take a signal coming out of a 555 timer, pass it through a 4017 decade counter to achieve a led sequencer type output, but instead of lighting up leds, I need to activate high voltage transformers. The output of the 4017 is not adequate, so I decided to try and pass that signal through a 3055 transistor in a switching circuit style, to turn on and off the transformers using one or two 3.7v lithium batteries feeding the collector/emitter.
I believe I attached a pdf of a similar schematic that someone else on here is working with, trying to get fireworks to go off in a similar manner as my circuit, but I don't recall an answer that worked for mine. In the supplied pdf, on first page, the 555 and 4017 part of the circuit works fine. The main difference between my circuit and the pdf is instead of 24v secondary input, I am using just one or two batteries rated at 3.7v each. As well, in my circuit the only thing I have above the collector is the batteries and the transformer, nothing else, the schematic is just for reference to show you what I am dealing with.
For some of you, you will shake your head after looking at it thinking it is a simple fix, but I have been staring at this problem too long and I need a second set of eyes to see it clearly. For the base resistance, I am using a 100 ohm resistor between input signal and base, emitter grounded out, and latest attempt of running 3.7v through the transformer in series to the collector. I do get some power coming out of the transformer (slight sparks when output wires touch, but desired output of spark gap from output wires is a couple centimeters and approximately 200kv - 400kv. So, obviously I am getting power running through, but not enough current? maybe not enough voltage? Not sure. It's been a while since I dealt with switching circuits and my mind is turning to mush and would love some help.
Thanks for any ideas,
Oz
Basically, I am trying to take a signal coming out of a 555 timer, pass it through a 4017 decade counter to achieve a led sequencer type output, but instead of lighting up leds, I need to activate high voltage transformers. The output of the 4017 is not adequate, so I decided to try and pass that signal through a 3055 transistor in a switching circuit style, to turn on and off the transformers using one or two 3.7v lithium batteries feeding the collector/emitter.
I believe I attached a pdf of a similar schematic that someone else on here is working with, trying to get fireworks to go off in a similar manner as my circuit, but I don't recall an answer that worked for mine. In the supplied pdf, on first page, the 555 and 4017 part of the circuit works fine. The main difference between my circuit and the pdf is instead of 24v secondary input, I am using just one or two batteries rated at 3.7v each. As well, in my circuit the only thing I have above the collector is the batteries and the transformer, nothing else, the schematic is just for reference to show you what I am dealing with.
For some of you, you will shake your head after looking at it thinking it is a simple fix, but I have been staring at this problem too long and I need a second set of eyes to see it clearly. For the base resistance, I am using a 100 ohm resistor between input signal and base, emitter grounded out, and latest attempt of running 3.7v through the transformer in series to the collector. I do get some power coming out of the transformer (slight sparks when output wires touch, but desired output of spark gap from output wires is a couple centimeters and approximately 200kv - 400kv. So, obviously I am getting power running through, but not enough current? maybe not enough voltage? Not sure. It's been a while since I dealt with switching circuits and my mind is turning to mush and would love some help.
Thanks for any ideas,
Oz
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